关键词: 乙烯 ,  , 开车 ,  , 优化 ,  , 乙烯制冷压缩机 ,  , 裂解气压缩机

Abstract:

Ethylene plant has complex process flow, a large number of equipment and time-consuming start-up, and the inappropriate operation during start-up often leads to the loss of products including ethylene, propylene and hydrogen. Therefore, the optimization of start-up is of great significance to the ethylene plant. This paper takes a large-scale ethylene plant in China as the example, introduces how to reduce the discharge of materials during start-up through design optimization, and optimizes the start-up plan of ethylene refrigeration compressor and the anti-surge control of cracking gas compressor. The start-up time can be shortened and the material loss can be reduced by taking corresponding measures.

Key words: ethylene, start-up, optimization, ethylene refrigeration compressor, cracking gas compressor